690 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



is SO completely folded on itseK that all the appendages and even the 

 genital process are on the anterior margin, level wath the anterior 

 border of the head, and they all point forward parallel with the long 

 axis of the body. 



TABLE OF SPECIES. 



1. Trunk longer than wide, smooth; cephalothorax slender, scarcely longer than the 

 trunk; genital process present macrotrachelus (Brian), 1906. 



1. Trunk wider than long, much wrinkled; cephalothorax plump, half as long again 

 as the trunk; no genital process .• rugosa (Ki-0yer), 1837, p. 690. 



1. Trimk the same width and length, smooth; cephalothorax in line with the trunk 

 and the same length; genital process present intermedia (Quidor), 1906. 



CLAVELLODES RUGOSA (Krjiyer). 



Plate 27, fig. L; plate 51, figs. 190 to 199. 



Anchorella rugosa Kr0yer, 1837, p. 284, pi. 2, fig. 7; pi. 3, fig. 14 a to c— T. Scott, 1900, 

 p. 176, pi. 8, figs. 45 to 48. 



Host and record of specimens. — Ten females with egg strings and 

 four attached males were obtained from the gills of the woK fish, 

 AnarrJiicJias lupus, off Kace Point, Gloucester, July 25, 1879, in 31 

 fathoms of water. They have been given Cat. No. 39616, U.S.N.M. 



Another lot consisting of 15 females was taken from the gills 

 of the same host at Casco Bay, Me., July 16, 1873, and has been 

 given Cat. No. 43592, U.S.N.M. 



Specific characters of female. — Cephalothorax considerably longer 

 than the trunk and bent backward against the dorsal surface of the 

 latter; head distinctly separated from the neck by a well-defined 

 groove, flattened dorso-ventrally, enlarged at the sides into two 

 prominent lateral lobes, which reach forward to the bases of the first 

 antennae; neck stout, cyhndrical, and covered with transverse 

 wrinkles; trunk subquadrate, flattened a little dorso-ventrally, and 

 with its entire surface thrown up into ridges and furrows; anterior 

 and posterior margins reentrant; bulla in the bottom of the hollow 

 at the anterior end, genital orifice in a corresponding position at the 

 posterior end; egg strings broad, nearly twice the length of the trunk, 

 and tapering posteriorly; eggs arranged in 10 to 15 rows, about 20 

 eggs in each row. 



First antennae three-jointed, the basal joint much wider and 

 longer than the others; second antennae biramose, the endopod much 

 larger than the exopod, and the two rami turned down across the 

 frontal margin, with their tips just meeting at the midfine; exopod 

 two-jointed, endopod one-jointed, with the tip and frontal margin 

 armed with short spines; mouth tube broad, strongly tapered, with 

 its tip just touching the second antennae; first maxillae tripartite, 

 the outer ramus much shorter and smaller than the other two; palp 

 bent down across the front of the maxilla and tipped with a single 



